Fix incompatible signature between ProcessBuilder and ProcessBuilderInterface. Add first spec for FlowBundle.
Merge pull request #1639 from Richtermeister/fix-flow-builder-interface

Fix incompatible signature between ProcessBuilder and ProcessBuilderInterface
Fix the issue with too many connections
Fixed missing use statements

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Merge pull request #1642 from saro0h/fix-use-statements

Fixed missing use statements.
Add migration to update your product model with sku index
Merge pull request #1644 from pilot/patch-2

Add migration to update your product model with sku index
[WebBundle] Prevent fatal error when value is array type
Merge pull request #1646 from stloyd/patch-1

[WebBundle] Prevent fatal error when value is array type